/// <summary>
/// MyLocation类的+运算符重载，必须是Static
/// </summary>
/// <param name="loc">new Loaction</param>
/// <param name="loc1">new Loaction</param>
/// <returns></returns>
public static MyLocation operator +(MyLocation loc, MyLocation loc1)
{
MyLocation MyLocation = new MyLocation();
foreach (PropertyInfo item in MyLocation.GetType().GetProperties())
{
Type t = item.PropertyType;
item.SetValue(MyLocation, (double)loc.GetType().GetProperty(item.Name).GetValue(loc) + (double)loc1.GetType().GetProperty(item.Name).GetValue(loc1));
}
return(MyLocation);
}
private void btnRun_Click(object sender, EventArgs e)
{
double deltaX = para.MyPoint.X - para.Center.X;
double deltaY = para.MyPoint.Y - para.Center.Y;
double radius = Math.Sqrt(Math.Pow(deltaX, 2) + Math.Pow(deltaY, 2));
Point point = para.Center;
TransPoint(ref point);
graphic.DrawEllipse(new Pen(Color.Blue, 3), (int)(point.X - radius), (int)(point.Y - radius), (int)(2 * radius), (int)(2 * radius));
MyLocation myLocation = new MyLocation();
myLocation.X = para.MyPoint.X;
myLocation.Y = para.MyPoint.Y;
var l = myLocation.GetLocation(myLocation, para.Center.X, para.Center.Y, para.Angle, para.XDirection, para.YDirection);
Point pointResult = new Point(Convert.ToInt32(l.X), Convert.ToInt32(l.Y));
TransPoint(ref pointResult);
graphic.FillEllipse(Brushes.Green, pointResult.X - 5, pointResult.Y - 5, 10, 10);
graphic.DrawString(string.Format("({0}º,{1},{2})", para.Angle.ToString("0"), l.X.ToString("0"), l.Y.ToString("0")), new Font("宋体", 10, FontStyle.Italic), Brushes.Black, pointResult);
Point myPoint = para.MyPoint;
TransPoint(ref myPoint);
Point center = para.Center;
TransPoint(ref center);
graphic.DrawLine(new Pen(Brushes.Cyan, 2), myPoint, center);
graphic.DrawLine(new Pen(Brushes.Cyan, 2), pointResult, center);
//旋转180度参考点
var point180 = myLocation.GetLocation(myLocation, para.Center.X, para.Center.Y, 180, para.XDirection, para.YDirection);
Point pointResult180 = new Point(Convert.ToInt32(point180.X), Convert.ToInt32(point180.Y));
TransPoint(ref pointResult180);
graphic.FillEllipse(Brushes.Black, pointResult180.X - 5, pointResult180.Y - 5, 10, 10);
graphic.DrawString(string.Format("(旋转180度)", point180.X.ToString("0"), point180.Y.ToString("0")), new Font("宋体", 10, FontStyle.Italic), Brushes.Black, pointResult180);
this.pictureBox1.Image = the_back;
}
/// <summary>
/// 返回旋转后的MyLocation
/// </summary>
/// <param name="MyLocation">旋转之前MyLocation</param>
/// <param name="X0">旋转中心X0</param>
/// <param name="Y0">旋转中心Y0</param>
/// <param name="degree">旋转的角度</param>
/// <param name="X_Positive">用于判断相限，水平方向沿→递增为真</param>
/// <param name="Y_Positive">用于判断相限，垂直方向向↑递增为真</param>
/// <returns></returns>
public MyLocation GetLocation(MyLocation myLocation, double X0, double Y0, double degree, bool X_Positive = true, bool Y_Positive = true)
{
/*绕原点旋转矩阵表达式 https://blog.csdn.net/u012138730/article/details/80320162
* [cos(θ)，sin(θ)] [x] [x1]
* [-sin(θ)，cos(θ)] [y] [y1]
*/
MyLocation loc = new MyLocation();
double rad = (degree / 180) * Math.PI;
if (X_Positive == true && Y_Positive == true)
{
//角度为正 顺时针旋转
loc.X = (myLocation.X - X0) * Math.Cos(rad) + (myLocation.Y - Y0) * Math.Sin(rad) + X0;
loc.Y = -(myLocation.X - X0) * Math.Sin(rad) + (myLocation.Y - Y0) * Math.Cos(rad) + Y0;
}
else if (X_Positive == false && Y_Positive == true)
{
//角度为正 逆时针旋转
rad = -rad;
loc.X = (myLocation.X - X0) * Math.Cos(rad) + (myLocation.Y - Y0) * Math.Sin(rad) + X0;
loc.Y = -(myLocation.X - X0) * Math.Sin(rad) + (myLocation.Y - Y0) * Math.Cos(rad) + Y0;
}
else if (X_Positive == true && Y_Positive == false)
{
//角度为正 逆时针旋转
rad = -rad;
loc.X = (myLocation.X - X0) * Math.Cos(rad) + (myLocation.Y - Y0) * Math.Sin(rad) + X0;
loc.Y = -(myLocation.X - X0) * Math.Sin(rad) + (myLocation.Y - Y0) * Math.Cos(rad) + Y0;
}
else
{
//角度为正 顺时针旋转
loc.X = (myLocation.X - X0) * Math.Cos(rad) + (myLocation.Y - Y0) * Math.Sin(rad) + X0;
loc.Y = -(myLocation.X - X0) * Math.Sin(rad) + (myLocation.Y - Y0) * Math.Cos(rad) + Y0;
}
return(loc);
}
